หนา้ 1 จาก 1 Translation November 13, 2019 Subject: Management explanation and analysis for Quarter ended 30 September 2019 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe

1 / 3 MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS • Explanation and analysis of financial performance for the three-month period ended 31 March 2020

หนา้ 1 จาก 1 Translation May 13, 2020 Subject: Management explanation and analysis for Year ended 31 March 2020 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public Company

Ref: SP 2020/008 Date : May 14, 2020 Subject : The Explanation to SET concerning the operating result for Q1/2020 more than 20% Attention : The Director and Manager of the Stock Exchange of Thailand

1 / 4 MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS • Explanation and analysis of financial performance for the year ended 31 December 2019 • Explanation and

2024 annual compliance reports. In this front, reporting of any non-application or unfinished application of the recommended guidelines shall be accompanied by the explanation of the associated

already investigated TTA shareholding structure and request explanation from relevant persons. Under the SEC regulations, any person and persons hold or announce intention to hold at least 25% stake in TTA

management companies must provide explanation concerning the funds for investors? understanding and must also take necessary steps to ensure that investors learn of associated risks prior to making investment

1 / 2 IR.022/2017 13 November 2017 Re: Clarification on the changes of Profit and Loss Statement To President The Stock Exchange of Thailand T Engineering Corporation Public Company Limited (the

, exercise their rights to protect their own benefits and seek clarification or explanation from the company directors and executives so as to have sufficient information for their decision-making.The above